nodebook/chapter-09/examples/modules/react-app-browserify.js

Node.js — Apprendre par l'exemple • Devenez autonome avec JavaScript, l'écosystème npm, le développement frontend, les applications web et en ligne de commande.

(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
'use strict';

exports.__esModule = true;

var _react = require('react');

var _react2 = _interopRequireDefault(_react);

var _timer = require('./timer.js');

var _timer2 = _interopRequireDefault(_timer);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var DateInterval = function (_Component) {
  _inherits(DateInterval, _Component);

  function DateInterval(props) {
    _classCallCheck(this, DateInterval);

    var _this = _possibleConstructorReturn(this, _Component.call(this, props));

    var interval = props.interval;

    _this.onTick = _this.onTick.bind(_this);

    _this.state = {
      tickData: (0, _timer2.default)({ interval: interval, onTick: _this.onTick }) };
    return _this;
  }

  DateInterval.prototype.onTick = function onTick(tickData) {
    this.setState({ tickData: tickData });
  };

  DateInterval.prototype.render = function render() {
    var _state$tickData = this.state.tickData,
        className = _state$tickData.className,
        now = _state$tickData.now;


    return _react2.default.createElement(
      'time',
      { className: className, dateTime: now.toISOString() },
      now.toLocaleTimeString()
    );
  };

  return DateInterval;
}(_react.Component);

exports.default = DateInterval;

},{"./timer.js":3,"react":180}],2:[function(require,module,exports){
'use strict';

var _react = require('react');

var _reactDom = require('react-dom');

var _reactDom2 = _interopRequireDefault(_reactDom);

var _dateInterval = require('./date-interval.jsx');

var _dateInterval2 = _interopRequireDefault(_dateInterval);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

_reactDom2.default.render((0, _react.createElement)(_dateInterval2.default, { interval: 1000 }), document.querySelector('#app'));

},{"./date-interval.jsx":1,"react":180,"react-dom":29}],3:[function(require,module,exports){
'use strict';

var tick = function tick() {
  var now = new Date();

  return {
    now: now,
    className: now.getSeconds() % 2 ? 'impair' : 'pair'
  };
};

module.exports = function timer(_ref) {
  var onTick = _ref.onTick,
      interval = _ref.interval;

  setInterval(function () {
    return onTick(tick());
  }, interval);

  return tick();
};

},{}],4:[function(require,module,exports){
(function (process){
'use strict';

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * @typechecks
 */

var emptyFunction = require('./emptyFunction');

/**
 * Upstream version of event listener. Does not take into account specific
 * nature of platform.
 */
var EventListener = {
  /**
   * Listen to DOM events during the bubble phase.
   *
   * @param {DOMEventTarget} target DOM element to register listener on.
   * @param {string} eventType Event type, e.g. 'click' or 'mouseover'.
   * @param {function} callback Callback function.
   * @return {object} Object with a `remove` method.
   */
  listen: function listen(target, eventType, callback) {
    if (target.addEventListener) {
      target.addEventListener(eventType, callback, false);
      return {
        remove: function remove() {
          target.removeEventListener(eventType, callback, false);
        }
      };
    } else if (target.attachEvent) {
      target.attachEvent('on' + eventType, callback);
      return {
        remove: function remove() {
          target.detachEvent('on' + eventType, callback);
        }
      };
    }
  },

  /**
   * Listen to DOM events during the capture phase.
   *
   * @param {DOMEventTarget} target DOM element to register listener on.
   * @param {string} eventType Event type, e.g. 'click' or 'mouseover'.
   * @param {function} callback Callback function.
   * @return {object} Object with a `remove` method.
   */
  capture: function capture(target, eventType, callback) {
    if (target.addEventListener) {
      target.addEventListener(eventType, callback, true);
      return {
        remove: function remove() {
          target.removeEventListener(eventType, callback, true);
        }
      };
    } else {
      if (process.env.NODE_ENV !== 'production') {
        console.error('Attempted to listen to events during the capture phase on a ' + 'browser that does not support the capture phase. Your application ' + 'will not receive some events.');
      }
      return {
        remove: emptyFunction
      };
    }
  },

  registerDefault: function registerDefault() {}
};

module.exports = EventListener;
}).call(this,require('_process'))
},{"./emptyFunction":11,"_process":28}],5:[function(require,module,exports){
/**
 * Copyright (c) 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 */

'use strict';

var canUseDOM = !!(typeof window !== 'undefined' && window.document && window.document.createElement);

/**
 * Simple, lightweight module assisting with the detection and context of
 * Worker. Helps avoid circular dependencies and allows code to reason about
 * whether or not they are in a Worker, even if they never include the main
 * `ReactWorker` dependency.
 */
var ExecutionEnvironment = {

  canUseDOM: canUseDOM,

  canUseWorkers: typeof Worker !== 'undefined',

  canUseEventListeners: canUseDOM && !!(window.addEventListener || window.attachEvent),

  canUseViewport: canUseDOM && !!window.screen,

  isInWorker: !canUseDOM // For now, this is true - might change in the future.

};

module.exports = ExecutionEnvironment;
},{}],6:[function(require,module,exports){
"use strict";

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @typechecks
 */

var _hyphenPattern = /-(.)/g;

/**
 * Camelcases a hyphenated string, for example:
 *
 *   > camelize('background-color')
 *   < "backgroundColor"
 *
 * @param {string} string
 * @return {string}
 */
function camelize(string) {
  return string.replace(_hyphenPattern, function (_, character) {
    return character.toUpperCase();
  });
}

module.exports = camelize;
},{}],7:[function(require,module,exports){
/**
 * Copyright (c) 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @typechecks
 */

'use strict';

var camelize = require('./camelize');

var msPattern = /^-ms-/;

/**
 * Camelcases a hyphenated CSS property name, for example:
 *
 *   > camelizeStyleName('background-color')
 *   < "backgroundColor"
 *   > camelizeStyleName('-moz-transition')
 *   < "MozTransition"
 *   > camelizeStyleName('-ms-transition')
 *   < "msTransition"
 *
 * As Andi Smith suggests
 * (http://www.andismith.com/blog/2012/02/modernizr-prefixed/), an `-ms` prefix
 * is converted to lowercase `ms`.
 *
 * @param {string} string
 * @return {string}
 */
function camelizeStyleName(string) {
  return camelize(string.replace(msPattern, 'ms-'));
}

module.exports = camelizeStyleName;
},{"./camelize":6}],8:[function(require,module,exports){
'use strict';

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * 
 */

var isTextNode = require('./isTextNode');

/*eslint-disable no-bitwise */

/**
 * Checks if a given DOM node contains or is another DOM node.
 */
function containsNode(outerNode, innerNode) {
  if (!outerNode || !innerNode) {
    return false;
  } else if (outerNode === innerNode) {
    return true;
  } else if (isTextNode(outerNode)) {
    return false;
  } else if (isTextNode(innerNode)) {
    return containsNode(outerNode, innerNode.parentNode);
  } else if ('contains' in outerNode) {
    return outerNode.contains(innerNode);
  } else if (outerNode.compareDocumentPosition) {
    return !!(outerNode.compareDocumentPosition(innerNode) & 16);
  } else {
    return false;
  }
}

module.exports = containsNode;
},{"./isTextNode":21}],9:[function(require,module,exports){
(function (process){
'use strict';

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @typechecks
 */

var invariant = require('./invariant');

/**
 * Convert array-like objects to arrays.
 *
 * This API assumes the caller knows the contents of the data type. For less
 * well defined inputs use createArrayFromMixed.
 *
 * @param {object|function|filelist} obj
 * @return {array}
 */
function toArray(obj) {
  var length = obj.length;

  // Some browsers builtin objects can report typeof 'function' (e.g. NodeList
  // in old versions of Safari).
  !(!Array.isArray(obj) && (typeof obj === 'object' || typeof obj === 'function')) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'toArray: Array-like object expected') : invariant(false) : void 0;

  !(typeof length === 'number') ? process.env.NODE_ENV !== 'production' ? invariant(false, 'toArray: Object needs a length property') : invariant(false) : void 0;

  !(length === 0 || length - 1 in obj) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'toArray: Object should have keys for indices') : invariant(false) : void 0;

  !(typeof obj.callee !== 'function') ? process.env.NODE_ENV !== 'production' ? invariant(false, 'toArray: Object can\'t be `arguments`. Use rest params ' + '(function(...args) {}) or Array.from() instead.') : invariant(false) : void 0;

  // Old IE doesn't give collections access to hasOwnProperty. Assume inputs
  // without method will throw during the slice call and skip straight to the
  // fallback.
  if (obj.hasOwnProperty) {
    try {
      return Array.prototype.slice.call(obj);
    } catch (e) {
      // IE < 9 does not support Array#slice on collections objects
    }
  }

  // Fall back to copying key by key. This assumes all keys have a value,
  // so will not preserve sparsely populated inputs.
  var ret = Array(length);
  for (var ii = 0; ii < length; ii++) {
    ret[ii] = obj[ii];
  }
  return ret;
}

/**
 * Perform a heuristic test to determine if an object is "array-like".
 *
 *   A monk asked Joshu, a Zen master, "Has a dog Buddha nature?"
 *   Joshu replied: "Mu."
 *
 * This function determines if its argument has "array nature": it returns
 * true if the argument is an actual array, an `arguments' object, or an
 * HTMLCollection (e.g. node.childNodes or node.getElementsByTagName()).
 *
 * It will return false for other array-like objects like Filelist.
 *
 * @param {*} obj
 * @return {boolean}
 */
function hasArrayNature(obj) {
  return (
    // not null/false
    !!obj && (
    // arrays are objects, NodeLists are functions in Safari
    typeof obj == 'object' || typeof obj == 'function') &&
    // quacks like an array
    'length' in obj &&
    // not window
    !('setInterval' in obj) &&
    // no DOM node should be considered an array-like
    // a 'select' element has 'length' and 'item' properties on IE8
    typeof obj.nodeType != 'number' && (
    // a real array
    Array.isArray(obj) ||
    // arguments
    'callee' in obj ||
    // HTMLCollection/NodeList
    'item' in obj)
  );
}

/**
 * Ensure that the argument is an array by wrapping it in an array if it is not.
 * Creates a copy of the argument if it is already an array.
 *
 * This is mostly useful idiomatically:
 *
 *   var createArrayFromMixed = require('createArrayFromMixed');
 *
 *   function takesOneOrMoreThings(things) {
 *     things = createArrayFromMixed(things);
 *     ...
 *   }
 *
 * This allows you to treat `things' as an array, but accept scalars in the API.
 *
 * If you need to convert an array-like object, like `arguments`, into an array
 * use toArray instead.
 *
 * @param {*} obj
 * @return {array}
 */
function createArrayFromMixed(obj) {
  if (!hasArrayNature(obj)) {
    return [obj];
  } else if (Array.isArray(obj)) {
    return obj.slice();
  } else {
    return toArray(obj);
  }
}

module.exports = createArrayFromMixed;
}).call(this,require('_process'))
},{"./invariant":19,"_process":28}],10:[function(require,module,exports){
(function (process){
'use strict';

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @typechecks
 */

/*eslint-disable fb-www/unsafe-html*/

var ExecutionEnvironment = require('./ExecutionEnvironment');

var createArrayFromMixed = require('./createArrayFromMixed');
var getMarkupWrap = require('./getMarkupWrap');
var invariant = require('./invariant');

/**
 * Dummy container used to render all markup.
 */
var dummyNode = ExecutionEnvironment.canUseDOM ? document.createElement('div') : null;

/**
 * Pattern used by `getNodeName`.
 */
var nodeNamePattern = /^\s*<(\w+)/;

/**
 * Extracts the `nodeName` of the first element in a string of markup.
 *
 * @param {string} markup String of markup.
 * @return {?string} Node name of the supplied markup.
 */
function getNodeName(markup) {
  var nodeNameMatch = markup.match(nodeNamePattern);
  return nodeNameMatch && nodeNameMatch[1].toLowerCase();
}

/**
 * Creates an array containing the nodes rendered from the supplied markup. The
 * optionally supplied `handleScript` function will be invoked once for each
 * <script> element that is rendered. If no `handleScript` function is supplied,
 * an exception is thrown if any <script> elements are rendered.
 *
 * @param {string} markup A string of valid HTML markup.
 * @param {?function} handleScript Invoked once for each rendered <script>.
 * @return {array<DOMElement|DOMTextNode>} An array of rendered nodes.
 */
function createNodesFromMarkup(markup, handleScript) {
  var node = dummyNode;
  !!!dummyNode ? process.env.NODE_ENV !== 'production' ? invariant(false, 'createNodesFromMarkup dummy not initialized') : invariant(false) : void 0;
  var nodeName = getNodeName(markup);

  var wrap = nodeName && getMarkupWrap(nodeName);
  if (wrap) {
    node.innerHTML = wrap[1] + markup + wrap[2];

    var wrapDepth = wrap[0];
    while (wrapDepth--) {
      node = node.lastChild;
    }
  } else {
    node.innerHTML = markup;
  }

  var scripts = node.getElementsByTagName('script');
  if (scripts.length) {
    !handleScript ? process.env.NODE_ENV !== 'production' ? invariant(false, 'createNodesFromMarkup(...): Unexpected <script> element rendered.') : invariant(false) : void 0;
    createArrayFromMixed(scripts).forEach(handleScript);
  }

  var nodes = Array.from(node.childNodes);
  while (node.lastChild) {
    node.removeChild(node.lastChild);
  }
  return nodes;
}

module.exports = createNodesFromMarkup;
}).call(this,require('_process'))
},{"./ExecutionEnvironment":5,"./createArrayFromMixed":9,"./getMarkupWrap":15,"./invariant":19,"_process":28}],11:[function(require,module,exports){
"use strict";

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * 
 */

function makeEmptyFunction(arg) {
  return function () {
    return arg;
  };
}

/**
 * This function accepts and discards inputs; it has no side effects. This is
 * primarily useful idiomatically for overridable function endpoints which
 * always need to be callable, since JS lacks a null-call idiom ala Cocoa.
 */
var emptyFunction = function emptyFunction() {};

emptyFunction.thatReturns = makeEmptyFunction;
emptyFunction.thatReturnsFalse = makeEmptyFunction(false);
emptyFunction.thatReturnsTrue = makeEmptyFunction(true);
emptyFunction.thatReturnsNull = makeEmptyFunction(null);
emptyFunction.thatReturnsThis = function () {
  return this;
};
emptyFunction.thatReturnsArgument = function (arg) {
  return arg;
};

module.exports = emptyFunction;
},{}],12:[function(require,module,exports){
(function (process){
/**
 * Copyright (c) 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 */

'use strict';

var emptyObject = {};

if (process.env.NODE_ENV !== 'production') {
  Object.freeze(emptyObject);
}

module.exports = emptyObject;
}).call(this,require('_process'))
},{"_process":28}],13:[function(require,module,exports){
/**
 * Copyright (c) 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 */

'use strict';

/**
 * @param {DOMElement} node input/textarea to focus
 */

function focusNode(node) {
  // IE8 can throw "Can't move focus to the control because it is invisible,
  // not enabled, or of a type that does not accept the focus." for all kinds of
  // reasons that are too expensive and fragile to test.
  try {
    node.focus();
  } catch (e) {}
}

module.exports = focusNode;
},{}],14:[function(require,module,exports){
'use strict';

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @typechecks
 */

/* eslint-disable fb-www/typeof-undefined */

/**
 * Same as document.activeElement but wraps in a try-catch block. In IE it is
 * not safe to call document.activeElement if there is nothing focused.
 *
 * The activeElement will be null only if the document or document body is not
 * yet defined.
 */
function getActiveElement() /*?DOMElement*/{
  if (typeof document === 'undefined') {
    return null;
  }
  try {
    return document.activeElement || document.body;
  } catch (e) {
    return document.body;
  }
}

module.exports = getActiveElement;
},{}],15:[function(require,module,exports){
(function (process){
'use strict';

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 */

/*eslint-disable fb-www/unsafe-html */

var ExecutionEnvironment = require('./ExecutionEnvironment');

var invariant = require('./invariant');

/**
 * Dummy container used to detect which wraps are necessary.
 */
var dummyNode = ExecutionEnvironment.canUseDOM ? document.createElement('div') : null;

/**
 * Some browsers cannot use `innerHTML` to render certain elements standalone,
 * so we wrap them, render the wrapped nodes, then extract the desired node.
 *
 * In IE8, certain elements cannot render alone, so wrap all elements ('*').
 */

var shouldWrap = {};

var selectWrap = [1, '<select multiple="true">', '</select>'];
var tableWrap = [1, '<table>', '</table>'];
var trWrap = [3, '<table><tbody><tr>', '</tr></tbody></table>'];

var svgWrap = [1, '<svg xmlns="http://www.w3.org/2000/svg">', '</svg>'];

var markupWrap = {
  '*': [1, '?<div>', '</div>'],

  'area': [1, '<map>', '</map>'],
  'col': [2, '<table><tbody></tbody><colgroup>', '</colgroup></table>'],
  'legend': [1, '<fieldset>', '</fieldset>'],
  'param': [1, '<object>', '</object>'],
  'tr': [2, '<table><tbody>', '</tbody></table>'],

  'optgroup': selectWrap,
  'option': selectWrap,

  'caption': tableWrap,
  'colgroup': tableWrap,
  'tbody': tableWrap,
  'tfoot': tableWrap,
  'thead': tableWrap,

  'td': trWrap,
  'th': trWrap
};

// Initialize the SVG elements since we know they'll always need to be wrapped
// consistently. If they are created inside a <div> they will be initialized in
// the wrong namespace (and will not display).
var svgElements = ['circle', 'clipPath', 'defs', 'ellipse', 'g', 'image', 'line', 'linearGradient', 'mask', 'path', 'pattern', 'polygon', 'polyline', 'radialGradient', 'rect', 'stop', 'text', 'tspan'];
svgElements.forEach(function (nodeName) {
  markupWrap[nodeName] = svgWrap;
  shouldWrap[nodeName] = true;
});

/**
 * Gets the markup wrap configuration for the supplied `nodeName`.
 *
 * NOTE: This lazily detects which wraps are necessary for the current browser.
 *
 * @param {string} nodeName Lowercase `nodeName`.
 * @return {?array} Markup wrap configuration, if applicable.
 */
function getMarkupWrap(nodeName) {
  !!!dummyNode ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Markup wrapping node not initialized') : invariant(false) : void 0;
  if (!markupWrap.hasOwnProperty(nodeName)) {
    nodeName = '*';
  }
  if (!shouldWrap.hasOwnProperty(nodeName)) {
    if (nodeName === '*') {
      dummyNode.innerHTML = '<link />';
    } else {
      dummyNode.innerHTML = '<' + nodeName + '></' + nodeName + '>';
    }
    shouldWrap[nodeName] = !dummyNode.firstChild;
  }
  return shouldWrap[nodeName] ? markupWrap[nodeName] : null;
}

module.exports = getMarkupWrap;
}).call(this,require('_process'))
},{"./ExecutionEnvironment":5,"./invariant":19,"_process":28}],16:[function(require,module,exports){
/**
 * Copyright (c) 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @typechecks
 */

'use strict';

/**
 * Gets the scroll position of the supplied element or window.
 *
 * The return values are unbounded, unlike `getScrollPosition`. This means they
 * may be negative or exceed the element boundaries (which is possible using
 * inertial scrolling).
 *
 * @param {DOMWindow|DOMElement} scrollable
 * @return {object} Map with `x` and `y` keys.
 */

function getUnboundedScrollPosition(scrollable) {
  if (scrollable === window) {
    return {
      x: window.pageXOffset || document.documentElement.scrollLeft,
      y: window.pageYOffset || document.documentElement.scrollTop
    };
  }
  return {
    x: scrollable.scrollLeft,
    y: scrollable.scrollTop
  };
}

module.exports = getUnboundedScrollPosition;
},{}],17:[function(require,module,exports){
'use strict';

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @typechecks
 */

var _uppercasePattern = /([A-Z])/g;

/**
 * Hyphenates a camelcased string, for example:
 *
 *   > hyphenate('backgroundColor')
 *   < "background-color"
 *
 * For CSS style names, use `hyphenateStyleName` instead which works properly
 * with all vendor prefixes, including `ms`.
 *
 * @param {string} string
 * @return {string}
 */
function hyphenate(string) {
  return string.replace(_uppercasePattern, '-$1').toLowerCase();
}

module.exports = hyphenate;
},{}],18:[function(require,module,exports){
/**
 * Copyright (c) 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @typechecks
 */

'use strict';

var hyphenate = require('./hyphenate');

var msPattern = /^ms-/;

/**
 * Hyphenates a camelcased CSS property name, for example:
 *
 *   > hyphenateStyleName('backgroundColor')
 *   < "background-color"
 *   > hyphenateStyleName('MozTransition')
 *   < "-moz-transition"
 *   > hyphenateStyleName('msTransition')
 *   < "-ms-transition"
 *
 * As Modernizr suggests (http://modernizr.com/docs/#prefixed), an `ms` prefix
 * is converted to `-ms-`.
 *
 * @param {string} string
 * @return {string}
 */
function hyphenateStyleName(string) {
  return hyphenate(string).replace(msPattern, '-ms-');
}

module.exports = hyphenateStyleName;
},{"./hyphenate":17}],19:[function(require,module,exports){
(function (process){
/**
 * Copyright (c) 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 */

'use strict';

/**
 * Use invariant() to assert state which your program assumes to be true.
 *
 * Provide sprintf-style format (only %s is supported) and arguments
 * to provide information about what broke and what you were
 * expecting.
 *
 * The invariant message will be stripped in production, but the invariant
 * will remain to ensure logic does not differ in production.
 */

var validateFormat = function validateFormat(format) {};

if (process.env.NODE_ENV !== 'production') {
  validateFormat = function validateFormat(format) {
    if (format === undefined) {
      throw new Error('invariant requires an error message argument');
    }
  };
}

function invariant(condition, format, a, b, c, d, e, f) {
  validateFormat(format);

  if (!condition) {
    var error;
    if (format === undefined) {
      error = new Error('Minified exception occurred; use the non-minified dev environment ' + 'for the full error message and additional helpful warnings.');
    } else {
      var args = [a, b, c, d, e, f];
      var argIndex = 0;
      error = new Error(format.replace(/%s/g, function () {
        return args[argIndex++];
      }));
      error.name = 'Invariant Violation';
    }

    error.framesToPop = 1; // we don't care about invariant's own frame
    throw error;
  }
}

module.exports = invariant;
}).call(this,require('_process'))
},{"_process":28}],20:[function(require,module,exports){
'use strict';

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @typechecks
 */

/**
 * @param {*} object The object to check.
 * @return {boolean} Whether or not the object is a DOM node.
 */
function isNode(object) {
  return !!(object && (typeof Node === 'function' ? object instanceof Node : typeof object === 'object' && typeof object.nodeType === 'number' && typeof object.nodeName === 'string'));
}

module.exports = isNode;
},{}],21:[function(require,module,exports){
'use strict';

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @typechecks
 */

var isNode = require('./isNode');

/**
 * @param {*} object The object to check.
 * @return {boolean} Whether or not the object is a DOM text node.
 */
function isTextNode(object) {
  return isNode(object) && object.nodeType == 3;
}

module.exports = isTextNode;
},{"./isNode":20}],22:[function(require,module,exports){
/**
 * Copyright (c) 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * 
 * @typechecks static-only
 */

'use strict';

/**
 * Memoizes the return value of a function that accepts one string argument.
 */

function memoizeStringOnly(callback) {
  var cache = {};
  return function (string) {
    if (!cache.hasOwnProperty(string)) {
      cache[string] = callback.call(this, string);
    }
    return cache[string];
  };
}

module.exports = memoizeStringOnly;
},{}],23:[function(require,module,exports){
/**
 * Copyright (c) 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @typechecks
 */

'use strict';

var ExecutionEnvironment = require('./ExecutionEnvironment');

var performance;

if (ExecutionEnvironment.canUseDOM) {
  performance = window.performance || window.msPerformance || window.webkitPerformance;
}

module.exports = performance || {};
},{"./ExecutionEnvironment":5}],24:[function(require,module,exports){
'use strict';

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @typechecks
 */

var performance = require('./performance');

var performanceNow;

/**
 * Detect if we can use `window.performance.now()` and gracefully fallback to
 * `Date.now()` if it doesn't exist. We need to support Firefox < 15 for now
 * because of Facebook's testing infrastructure.
 */
if (performance.now) {
  performanceNow = function performanceNow() {
    return performance.now();
  };
} else {
  performanceNow = function performanceNow() {
    return Date.now();
  };
}

module.exports = performanceNow;
},{"./performance":23}],25:[function(require,module,exports){
/**
 * Copyright (c) 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @typechecks
 * 
 */

/*eslint-disable no-self-compare */

'use strict';

var hasOwnProperty = Object.prototype.hasOwnProperty;

/**
 * inlined Object.is polyfill to avoid requiring consumers ship their own
 * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is
 */
function is(x, y) {
  // SameValue algorithm
  if (x === y) {
    // Steps 1-5, 7-10
    // Steps 6.b-6.e: +0 != -0
    // Added the nonzero y check to make Flow happy, but it is redundant
    return x !== 0 || y !== 0 || 1 / x === 1 / y;
  } else {
    // Step 6.a: NaN == NaN
    return x !== x && y !== y;
  }
}

/**
 * Performs equality by iterating through keys on an object and returning false
 * when any key has values which are not strictly equal between the arguments.
 * Returns true when the values of all keys are strictly equal.
 */
function shallowEqual(objA, objB) {
  if (is(objA, objB)) {
    return true;
  }

  if (typeof objA !== 'object' || objA === null || typeof objB !== 'object' || objB === null) {
    return false;
  }

  var keysA = Object.keys(objA);
  var keysB = Object.keys(objB);

  if (keysA.length !== keysB.length) {
    return false;
  }

  // Test for A's keys different from B.
  for (var i = 0; i < keysA.length; i++) {
    if (!hasOwnProperty.call(objB, keysA[i]) || !is(objA[keysA[i]], objB[keysA[i]])) {
      return false;
    }
  }

  return true;
}

module.exports = shallowEqual;
},{}],26:[function(require,module,exports){
(function (process){
/**
 * Copyright 2014-2015, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 */

'use strict';

var emptyFunction = require('./emptyFunction');

/**
 * Similar to invariant but only logs a warning if the condition is not met.
 * This can be used to log issues in development environments in critical
 * paths. Removing the logging code for production environments will keep the
 * same logic and follow the same code paths.
 */

var warning = emptyFunction;

if (process.env.NODE_ENV !== 'production') {
  (function () {
    var printWarning = function printWarning(format) {
      for (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
        args[_key - 1] = arguments[_key];
      }

      var argIndex = 0;
      var message = 'Warning: ' + format.replace(/%s/g, function () {
        return args[argIndex++];
      });
      if (typeof console !== 'undefined') {
        console.error(message);
      }
      try {
        // --- Welcome to debugging React ---
        // This error was thrown as a convenience so that you can use this stack
        // to find the callsite that caused this warning to fire.
        throw new Error(message);
      } catch (x) {}
    };

    warning = function warning(condition, format) {
      if (format === undefined) {
        throw new Error('`warning(condition, format, ...args)` requires a warning ' + 'message argument');
      }

      if (format.indexOf('Failed Composite propType: ') === 0) {
        return; // Ignore CompositeComponent proptype check.
      }

      if (!condition) {
        for (var _len2 = arguments.length, args = Array(_len2 > 2 ? _len2 - 2 : 0), _key2 = 2; _key2 < _len2; _key2++) {
          args[_key2 - 2] = arguments[_key2];
        }

        printWarning.apply(undefined, [format].concat(args));
      }
    };
  })();
}

module.exports = warning;
}).call(this,require('_process'))
},{"./emptyFunction":11,"_process":28}],27:[function(require,module,exports){
/*
object-assign
(c) Sindre Sorhus
@license MIT
*/

'use strict';
/* eslint-disable no-unused-vars */
var getOwnPropertySymbols = Object.getOwnPropertySymbols;
var hasOwnProperty = Object.prototype.hasOwnProperty;
var propIsEnumerable = Object.prototype.propertyIsEnumerable;

function toObject(val) {
	if (val === null || val === undefined) {
		throw new TypeError('Object.assign cannot be called with null or undefined');
	}

	return Object(val);
}

function shouldUseNative() {
	try {
		if (!Object.assign) {
			return false;
		}

		// Detect buggy property enumeration order in older V8 versions.

		// https://bugs.chromium.org/p/v8/issues/detail?id=4118
		var test1 = new String('abc');  // eslint-disable-line no-new-wrappers
		test1[5] = 'de';
		if (Object.getOwnPropertyNames(test1)[0] === '5') {
			return false;
		}

		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
		var test2 = {};
		for (var i = 0; i < 10; i++) {
			test2['_' + String.fromCharCode(i)] = i;
		}
		var order2 = Object.getOwnPropertyNames(test2).map(function (n) {
			return test2[n];
		});
		if (order2.join('') !== '0123456789') {
			return false;
		}

		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
		var test3 = {};
		'abcdefghijklmnopqrst'.split('').forEach(function (letter) {
			test3[letter] = letter;
		});
		if (Object.keys(Object.assign({}, test3)).join('') !==
				'abcdefghijklmnopqrst') {
			return false;
		}

		return true;
	} catch (err) {
		// We don't expect any of the above to throw, but better to be safe.
		return false;
	}
}

module.exports = shouldUseNative() ? Object.assign : function (target, source) {
	var from;
	var to = toObject(target);
	var symbols;

	for (var s = 1; s < arguments.length; s++) {
		from = Object(arguments[s]);

		for (var key in from) {
			if (hasOwnProperty.call(from, key)) {
				to[key] = from[key];
			}
		}

		if (getOwnPropertySymbols) {
			symbols = getOwnPropertySymbols(from);
			for (var i = 0; i < symbols.length; i++) {
				if (propIsEnumerable.call(from, symbols[i])) {
					to[symbols[i]] = from[symbols[i]];
				}
			}
		}
	}

	return to;
};

},{}],28:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {};

// cached from whatever global is present so that test runners that stub it
// don't break things.  But we need to wrap it in a try catch in case it is
// wrapped in strict mode code which doesn't define any globals.  It's inside a
// function because try/catches deoptimize in certain engines.

var cachedSetTimeout;
var cachedClearTimeout;

function defaultSetTimout() {
    throw new Error('setTimeout has not been defined');
}
function defaultClearTimeout () {
    throw new Error('clearTimeout has not been defined');
}
(function () {
    try {
        if (typeof setTimeout === 'function') {
            cachedSetTimeout = setTimeout;
        } else {
            cachedSetTimeout = defaultSetTimout;
        }
    } catch (e) {
        cachedSetTimeout = defaultSetTimout;
    }
    try {
        if (typeof clearTimeout === 'function') {
            cachedClearTimeout = clearTimeout;
        } else {
            cachedClearTimeout = defaultClearTimeout;
        }
    } catch (e) {
        cachedClearTimeout = defaultClearTimeout;
    }
} ())
function runTimeout(fun) {
    if (cachedSetTimeout === setTimeout) {
        //normal enviroments in sane situations
        return setTimeout(fun, 0);
    }
    // if setTimeout wasn't available but was latter defined
    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
        cachedSetTimeout = setTimeout;
        return setTimeout(fun, 0);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedSetTimeout(fun, 0);
    } catch(e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
            return cachedSetTimeout.call(null, fun, 0);
        } catch(e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
            return cachedSetTimeout.call(this, fun, 0);
        }
    }


}
function runClearTimeout(marker) {
    if (cachedClearTimeout === clearTimeout) {
        //normal enviroments in sane situations
        return clearTimeout(marker);
    }
    // if clearTimeout wasn't available but was latter defined
    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
        cachedClearTimeout = clearTimeout;
        return clearTimeout(marker);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedClearTimeout(marker);
    } catch (e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
            return cachedClearTimeout.call(null, marker);
        } catch (e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
            return cachedClearTimeout.call(this, marker);
        }
    }



}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;

function cleanUpNextTick() {
    if (!draining || !currentQueue) {
        return;
    }
    draining = false;
    if (currentQueue.length) {
        queue = currentQueue.concat(queue);
    } else {
        queueIndex = -1;
    }
    if (queue.length) {
        drainQueue();
    }
}

function drainQueue() {
    if (draining) {
        return;
    }
    var timeout = runTimeout(cleanUpNextTick);
    draining = true;

    var len = queue.length;
    while(len) {
        currentQueue = queue;
        queue = [];
        while (++queueIndex < len) {
            if (currentQueue) {
                currentQueue[queueIndex].run();
            }
        }
        queueIndex = -1;
        len = queue.length;
    }
    currentQueue = null;
    draining = false;
    runClearTimeout(timeout);
}

process.nextTick = function (fun) {
    var args = new Array(arguments.length - 1);
    if (arguments.length > 1) {
        for (var i = 1; i < arguments.length; i++) {
            args[i - 1] = arguments[i];
        }
    }
    queue.push(new Item(fun, args));
    if (queue.length === 1 && !draining) {
        runTimeout(drainQueue);
    }
};

// v8 likes predictible objects
function Item(fun, array) {
    this.fun = fun;
    this.array = array;
}
Item.prototype.run = function () {
    this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};

function noop() {}

process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;

process.binding = function (name) {
    throw new Error('process.binding is not supported');
};

process.cwd = function () { return '/' };
process.chdir = function (dir) {
    throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };

},{}],29:[function(require,module,exports){
'use strict';

module.exports = require('./lib/ReactDOM');

},{"./lib/ReactDOM":59}],30:[function(require,module,exports){
/**
 * Copyright 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 */

'use strict';

var ARIADOMPropertyConfig = {
  Properties: {
    // Global States and Properties
    'aria-current': 0, // state
    'aria-details': 0,
    'aria-disabled': 0, // state
    'aria-hidden': 0, // state
    'aria-invalid': 0, // state
    'aria-keyshortcuts': 0,
    'aria-label': 0,
    'aria-roledescription': 0,
    // Widget Attributes
    'aria-autocomplete': 0,
    'aria-checked': 0,
    'aria-expanded': 0,
    'aria-haspopup': 0,
    'aria-level': 0,
    'aria-modal': 0,
    'aria-multiline': 0,
    'aria-multiselectable': 0,
    'aria-orientation': 0,
    'aria-placeholder': 0,
    'aria-pressed': 0,
    'aria-readonly': 0,
    'aria-required': 0,
    'aria-selected': 0,
    'aria-sort': 0,
    'aria-valuemax': 0,
    'aria-valuemin': 0,
    'aria-valuenow': 0,
    'aria-valuetext': 0,
    // Live Region Attributes
    'aria-atomic': 0,
    'aria-busy': 0,
    'aria-live': 0,
    'aria-relevant': 0,
    // Drag-and-Drop Attributes
    'aria-dropeffect': 0,
    'aria-grabbed': 0,
    // Relationship Attributes
    'aria-activedescendant': 0,
    'aria-colcount': 0,
    'aria-colindex': 0,
    'aria-colspan': 0,
    'aria-controls': 0,
    'aria-describedby': 0,
    'aria-errormessage': 0,
    'aria-flowto': 0,
    'aria-labelledby': 0,
    'aria-owns': 0,
    'aria-posinset': 0,
    'aria-rowcount': 0,
    'aria-rowindex': 0,
    'aria-rowspan': 0,
    'aria-setsize': 0
  },
  DOMAttributeNames: {},
  DOMPropertyNames: {}
};

module.exports = ARIADOMPropertyConfig;
},{}],31:[function(require,module,exports){
/**
 * Copyright 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 */

'use strict';

var ReactDOMComponentTree = require('./ReactDOMComponentTree');

var focusNode = require('fbjs/lib/focusNode');

var AutoFocusUtils = {
  focusDOMComponent: function () {
    focusNode(ReactDOMComponentTree.getNodeFromInstance(this));
  }
};

module.exports = AutoFocusUtils;
},{"./ReactDOMComponentTree":62,"fbjs/lib/focusNode":13}],32:[function(require,module,exports){
/**
 * Copyright 2013-present Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 */

'use strict';

var EventPropagators = require('./EventPropagators');
var ExecutionEnvironment = require('fbjs/lib/ExecutionEnvironment');
var FallbackCompositionState = require('./FallbackCompositionState');
var SyntheticCompositionEvent = require('./SyntheticCompositionEvent');
var SyntheticInputEvent = require('./SyntheticInputEvent');

var END_KEYCODES = [9, 13, 27, 32]; // Tab, Return, Esc, Space
var START_KEYCODE = 229;

var canUseCompositionEvent = ExecutionEnvironment.canUseDOM && 'CompositionEvent' in window;

var documentMode = null;
if (ExecutionEnvironment.canUseDOM && 'documentMode' in document) {
  documentMode = document.documentMode;
}

// Webkit offers a very useful `textInput` event that can be used to
// directly represent `beforeInput`. The IE `textinput` event is not as
// useful, so we don't use it.
var canUseTextInputEvent = ExecutionEnvironment.canUseDOM && 'TextEvent' in window && !documentMode && !isPresto();

// In IE9+, we have access to composition events, but the data supplied
// by the native compositionend event may be incorrect. Japanese ideographic
// spaces, for instance (\u3000) are not recorded correctly.
var useFallbackCompositionData = ExecutionEnvironment.canUseDOM && (!canUseCompositionEvent || documentMode && documentMode > 8 && documentMode <= 11);

/**
 * Opera <= 12 includes TextEvent in window, but does not fire
 * text input events. Rely on keypress instead.
 */
function isPresto() {
  var opera = window.opera;
  return typeof opera === 'object' && typeof opera.version === 'function' && parseInt(opera.version(), 10) <= 12;
}

var SPACEBAR_CODE = 32;
var SPACEBAR_CHAR = String.fromCharCode(SPACEBAR_CODE);

// Events and their corresponding property names.
var eventTypes = {
  beforeInput: {
    phasedRegistrationNames: {
      bubbled: 'onBeforeInput',
      captured: 'onBeforeInputCapture'
    },
    dependencies: ['topCompositionEnd', 'topKeyPress', 'topTextInput', 'topPaste']
  },
  compositionEnd: {
    phasedRegistrationNames: {
      bubbled: 'onCompositionEnd',
      captured: 'onCompositionEndCapture'
    },
    dependencies: ['topBlur', 'topCompositionEnd', 'topKeyDown', 'topKeyPress', 'topKeyUp', 'topMouseDown']
  },
  compositionStart: {
    phasedRegistrationNames: {
      bubbled: 'onCompositionStart',
      captured: 'onCompositionStartCapture'
    },
    dependencies: ['topBlur', 'topCompositionStart', 'topKeyDown', 'topKeyPress', 'topKeyUp', 'topMouseDown']
  },
  compositionUpdate: {
    phasedRegistrationNames: {
      bubbled: 'onCompositionUpdate',
      captured: 'onCompositionUpdateCapture'
    },
    dependencies: ['topBlur', 'topCompositionUpdate', 'topKeyDown', 'topKeyPress', 'topKeyUp', 'topMouseDown']
  }
};

// Track whether we've ever handled a keypress on the space key.
var hasSpaceKeypress = false;

/**